All terrain vehicle

ABSTRACT

An ATV is disclosed having a frame, a seat supported by the frame, front and rear wheels supporting the frame, a drivetrain supported by the frame, and an operator&#39;s compartment extending generally between the seat and a front enclosure. The ATV includes foot pedals to control the speed and acceleration of the vehicle. The ATV may include a floorboard including a footwell and a dead pedal for locating the operator&#39;s foot relative to the foot pedals.

REFERENCE TO RELATED APPLICATIONS

The present application is a continuation-in-part of U.S. patentapplication Ser. No. 13/362,889, filed Jan. 31, 2012, which claimspriority to U.S. Provisional application Ser. No. 61/438,452, filed Feb.1, 2011; Ser. No. 61/438,433 filed Feb. 1, 2011; and Ser. No. 61/438,538filed Feb. 1, 2011; the subject matter of each being incorporated hereinby reference.

BACKGROUND

The subject application relates to an ATV having improved operator areaergonomics and a roll cage surrounding the operator.

SUMMARY

ATVs are known and typically have 4 wheels supporting a frame and astraddle seat, the straddle seat may be defined for a single rider, orthe straddle seat may be elongated and have a passenger position. Oneform of straddle frame is shown in U.S. Pat. No. 5,975,624, the subjectmatter of which is incorporated herein by reference. This vehiclenormally has a front and rear rack for hauling various cargo. An exampleof such a vehicle is the Polaris Sportsman, and a 2 passenger vehicle isknown as the Polaris Sportsman Touring, see also US Publication20090195035, incorporated herein by reference.

Side by side vehicles are known in the industry and typically have 4wheels supported by a frame, and side by seats either in bench or bucketform. This class of vehicle normally has a roll cage associated with it.This vehicle also normally has a front cargo rack and a rear cargo boxor rear cargo rack. The Polaris Ranger and RZR are examples of the sideby side vehicles; see also U.S. Pat. No. 7,819,220 incorporated hereinby reference.

SUMMARY

In one aspect of the present disclosure, an ATV comprises a frame; aseat supported by the frame; front and rear wheels supporting the frame;a powertrain supported by the frame, and drivingly coupled to the frontand rear wheels; an operator's compartment extending generally betweenthe seat and a front enclosure, the front enclosure extending forwardlyto a position proximate an axial centerline of the front wheels; frontlower alignment arms having an inner end and an outer end; front strutshaving a shock absorber and a hub portion, the front struts beingcoupled to the front lower alignment arms at a lower end of the frontstruts and the frame at an upper end thereof; and a steering mechanismpositioned forward of the axial centerline of the front wheels andsteeringly coupled to the front struts.

In another aspect, an ATV comprises a frame having generallylongitudinally extending frame members, a front frame portion extendingtransversely across a front portion of the generally longitudinallyextending frame members, the front frame portion extending beyond thegenerally longitudinally extending frame members to define firstmounting extensions; a seat supported by the frame; front and rearwheels supporting the frame; a powertrain supported by the frame, anddrivingly coupled to the front and rear wheels; and front loweralignment arms having an inner end and an outer end, the inner end beingcoupled to the mounting extensions.

In yet another aspect, an ATV comprises a frame; a driver seat supportedby the frame and generally aligned with the longitudinal centerline ofthe vehicle; front and rear wheels supporting the frame; a steeringmechanism supported by the frame and coupled to the front and rearwheels for steering; a powertrain supported by the frame, and drivinglycoupled to the front and rear wheels; an operator's compartmentextending generally between the seat and a front enclosure; and aprotective canopy supported by the frame, at least a portion of theprotective canopy extending to a position laterally beyond the insideedge of the wheels.

In a further aspect, an ATV comprises a frame; a seat supported by theframe; front and rear wheels supporting the frame; a powertrainsupported by the frame, and drivingly coupled to the front and rearwheels; a front differential coupled to the powertrain and having drivecouplings coupled to the front wheels, a centerline through the drivecouplings being rearward of an axial centerline through the frontwheels; front struts having a shock absorber and a hub portion; and asteering mechanism positioned forward of the axial centerline of thefront wheels and steeringly coupled to the front struts.

In yet another aspect, an ATV comprises a frame having main framemembers extending generally parallel to a vehicle longitudinal axis. Afront frame portion has upright frame portions extending upwardly fromthe generally longitudinally extending frame members, and a cross framemember extending generally transverse to the vehicle longitudinal axis.A driver's seat is supported by the generally longitudinally extendingframe members and generally aligned with the longitudinal centerline ofthe vehicle. Front and rear wheels support the frame. A steeringmechanism is supported by the frame and is coupled to the front wheelsfor steering. A powertrain is supported by the frame, and is drivinglycoupled to the front and rear wheels. An operator's compartment extendsgenerally between the seat and a front enclosure. A protective canopy issupported by the frame, and at least a portion of the protective canopyis supported by the cross frame member at positions laterally beyond theseat.

In a further illustrative aspect, an all-terrain vehicle comprises aframe, a seat supported by the frame, and front and rear wheelssupporting the frame. A powertrain is supported by the frame and isdrivingly coupled to the front and rear wheels. Front lower alignmentarms include an inner end and an outer end, the inner end pivotablycoupled to the frame and the outer end coupled to one of the frontwheels. Front upper alignment arms include an inner end and an outerend, the inner end pivotably coupled to the frame and the outer endcoupled to one of the front wheels. Front shock absorbers are operablycoupled to the front upper alignment arms. Each shock absorber includesa lower mounting coupled to one of the upper alignment arms intermediatethe inner end and the outer end, and an upper mounting coupled to theframe.

In yet another aspect, an all-terrain vehicle comprises a frame, a seatsupported by the frame, and front and rear wheels supporting the frame.A powertrain is supported by the frame. A floorboard is supported by theframe. A foot control is positioned adjacent the floorboard and isconfigured to be depressed by a foot of an operator supported by theseat. The floorboard includes a footwell to receive a heel of theoperator's right foot, and a dead pedal to support the operator's leftfoot.

BRIEF DESCRIPTION OF THE DRAWINGS

The subject vehicle will be described by way of reference to thefollowing figures, where:

FIG. 1 is a front left perspective view of the vehicle of the presentdisclosure;

FIG. 2 is a right rear perspective view of the vehicle of FIG. 1;

FIG. 3 is a left side view of the vehicle of FIG. 1;

FIG. 4 is a front view of the vehicle of FIG. 1;

FIG. 5 is a front left perspective view of the frame of the vehicle ofFIGS. 1-4;

FIG. 6 is a left front under side perspective view of the frame of FIG.5;

FIG. 7 is a right rear perspective view of the frame of FIG. 5;

FIG. 8 is a top view of the frame of FIG. 5;

FIG. 9 is a rear view of the frame of FIG. 5;

FIG. 10 is an enlarged view of the front right engine mount;

FIG. 11 shows a front view of the frame;

FIG. 12 shows a front left perspective view of a front bracket of theframe;

FIG. 13 is a front under side perspective view of the ATV;

FIG. 14 is a cross-sectional view of the front differential and steeringmechanism through lines 14-14 of FIG. 4;

FIG. 15 is a left side view of the front portion of the ATV showing thefront differential and steering mechanism;

FIG. 16 is a left hand perspective view showing the front differentialand steering mechanism;

FIG. 17 is an enlarged perspective view of the steering mechanism shownin FIG. 16;

FIG. 18 is a right rear perspective view of the ATV;

FIG. 19 is a rear view of the ATV shown in FIG. 18;

FIG. 20 is a bottom view of the vehicle shown in FIG. 18;

FIG. 21 shows a top perspective view of the power train anddifferentials;

FIG. 22 is an underside perspective view of the power train anddifferentials shown in FIG. 21;

FIG. 23 is a right side view of the power train and differentials of theATV;

FIG. 24 is a top plan view of the ATV showing the operator'scompartment;

FIG. 25 is a cross-sectional view through lines 25-25 of FIG. 24;

FIG. 26 is a cross-sectional view through lines 26-26 if FIG. 24;

FIG. 27 is an enlarged view of the portion denoted in FIG. 9;

FIG. 28 is an enlarged perspective view of the ATV roll cage frontconnection;

FIG. 29 is an enlarged perspective view of the front of the ATV rollcage connection of FIG. 28;

FIG. 30 shows a front perspective view of a winch mounted to the ATV;

FIG. 31 shows the radiator mounted above the winch;

FIG. 32 shows an exploded view of the mounting of the winch andradiator;

FIG. 33 shows a perspective view of the roll cage;

FIG. 34 shows a rear exploded view of the roll cage of FIG. 33;

FIG. 35 is a front right perspective view of a vehicle of a secondembodiment of the present application;

FIG. 36 is a left-hand side view of the vehicle of FIG. 35;

FIG. 37 is a right side perspective view of the operator's area;

FIG. 38 is a left rear perspective view of the vehicle frame with theengine mounted;

FIG. 39 is a front left perspective view of the front of the frame;

FIG. 40 is a front left perspective view of the frame and engine mount;

FIG. 41 is a rear perspective view of a portion of the frame;

FIG. 42 is an enlarged view of the rear frame section of FIG. 41;

FIG. 43 is an underside view showing the front roll cage mount area;

FIG. 44 is an enlarged view of the front frame section;

FIG. 45 is an underside perspective view of the rear roll cage mountarea;

FIG. 46 is a view showing the front suspension and steering system;

FIG. 47 is a perspective view of a further illustrative front suspensionof a vehicle of the present application;

FIG. 48 is a front view of the front suspension of FIG. 47;

FIG. 49 is a top view of the front suspension of FIG. 47;

FIG. 50 is a bottom view of the front suspension of FIG. 47;

FIG. 51 is an exploded perspective view of the double A-arms of thefront suspension of FIG. 47;

FIG. 52 is another exploded perspective view of the double A-arms of thefront suspension of FIG. 47;

FIG. 53 is a front view in partial schematic, of a further illustrativefront suspension of a vehicle of the present application;

FIG. 54 is a partial top perspective view showing foot controlled pedalsabove a floorboard of a vehicle of the present application;

FIG. 55 is a perspective view of the floorboard of FIG. 54;

FIG. 56 is a top view of the floorboard of FIG. 54;

FIG. 57 is a cross-sectional view taken along line 57-57 of FIG. 56,showing a longitudinal elevational contour of a footwell of thefloorboard;

FIG. 58 is a cross-sectional view taken along line 58-58 of FIG. 56,showing a longitudinal elevational contour of a dead pedal of thefloorboard;

FIG. 59 is a cross-sectional view taken along line 59-59 of FIG. 56,showing a transverse elevational contour of the footwell of thefloorboard; and

FIG. 60 is a cross-sectional view taken along line 60-60 of FIG. 56,showing a transverse elevational contour of the dead pedal of thefloorboard.

DETAILED DESCRIPTION

For the purposes of promoting an understanding of the principals of theinvention, reference will now be made to the embodiments illustrated inthe drawings, which are described below. The embodiments disclosed beloware not intended to be exhaustive or limit the invention to the preciseform disclosed in the following detailed description. Rather, theembodiments are chosen and described so that others skilled in the artmay utilize their teachings. It will be understood that no limitation ofthe scope of the invention is thereby intended. The invention includesany alterations and further modifications in the illustrative devicesand described methods and further applications of the principles of theinvention which would normally occur to one skilled in the art to whichthe invention relates.

With reference first to FIGS. 1-4, the general nature of the vehiclewill be described. As shown, vehicle 2 is an ATV class vehicle for asingle rider having dimensions similar to those of the Polaris SportsmanXP vehicle. That is, the wheel base of ATV 2 (the longitudinal distancebetween the center of wheels 12, 14) is between 60 and 65 inches inlength, and in the embodiment shown in 62 inches. However as vehicle 2includes a roll cage structure 4, the vehicle includes a walk throughopening at 6 as best shown in FIG. 3, accessing an operator's area 8.With that background, the vehicle will be described in greater detail.

As shown in FIG. 1, vehicle 2 includes a frame 10, supported by frontwheels 12 and rear wheels 14. Frame 10 generally supports a powertrain20 as well as a single seat 22 shown in the form of a bucket seat. Thebucket seat 22 may take the form of the seat in the vehicle known as thePolaris RZR, which is also shown in U.S. Pat. No. 7,819,220, mentionedabove, the subject matter of which is incorporated herein by reference.

As shown in FIG. 2, the vehicle may be steered by a steering wheel 30which is adjustable by adjustment mechanism 32. Alternatively, vehicle 2may be steered by a handlebar as is known by the Polaris Sportsman XPreferred to above. In terms of vehicle speed controls, vehicle 2 mayhave operator controls 34 in the form of an accelerator pedal and abrake pedal similar to that of the Polaris RZR vehicle, or the vehiclemay have vehicle speed controls by way of a thumb throttle and handbrakes on the handlebar as known by the Polaris Sportsman XP. As alsoshown in FIGS. 2 and 4, ATV 2 includes a front suspension 40 and a rearsuspension 42. With the ATV 2 as generally described, the ATV 2 will bedescribed in greater detail.

With reference now to FIGS. 5-9, frame 10 will be described in greaterdetail. As shown best in FIGS. 5 and 6, frame 10 is comprised of frametubes 50 and 52, which extend generally longitudinally and define themain structure for ATV 2. Frame 10 includes an engine and transmissionmount portion 54, a rear suspension mount portion 56 and frontsuspension mount portion shown generally at 58. As shown, frame 10mounts an engine 60 (FIG. 1) and transmission 62 (FIG. 2) to mountportion 54. Engine 60 is of the type shown and described in either ofAssignee's Ser. Nos. 13/242,229 or 13/242,239 both of which were filedon Sep. 23, 2011, the subject matter of which is incorporated herein byreference. Transmission 62, and the mounting of the engine andtransmission together, as well as the mounting of the engine 90 andtransmission 62 to frame 10 is similar to that shown in either of U.S.patent application Ser. Nos. 12/849,480 or 12/849,516, both of whichwere filed on Aug. 3, 2010, the subject matter of which is incorporatedherein by reference. Frame 10 further includes a front differentialmount portion 70, a steering mechanism mount portion 72 and a steeringpost mount portion 74, all of which are shown in FIG. 5.

As shown in FIG. 5, frame tubes 50 and 52 are mirror images of eachother, and therefore will be discussed having similar components. Frametubes 50, 52 include tube portions 80, transition tube portions 82 andfront tube portions 84. Cross frame portions 86 and 88, in the form ofchannels, extend between and connect the tube portions 80. A frame pan90 extends from and is interconnected to frame tube portions 80 andcross frame portion 88, and extends generally rearwardly from the frametubes 50, 52. Frame pan 90 extends generally parallel to frame tubes 50,52 although frame pan 90 could extend at an angle relative thereto.

Frame pan 90 is generally trapezoidal in configuration (as best viewedin FIG. 8) and includes defined channels 92 for strengthening purposes.A clearance recess 94 is also defined as will be described furtherherein. As shown, frame pan 90 is a stamped and formed member from astructurally rigid material, such as steel or aluminum, but could becomprised of any structural material, such as a cast member, compositematerial, etc.

Rear suspension mount portion 56 is comprised of channels 100, 102(FIGS. 5-7) mounted to the channels 92 and extend upwardly therefrom.Each of the channels 100, 102 include upper apertures 104, 108 and lowerapertures 106, 110 for mounting suspension arms as shown best in FIG. 6,and as further described herein. Support tubes 120 (FIG. 7) are attachedto frame pan 90 and are coupled to channels 100 to rigidify the channelsand then extend rearwardly and upwardly to a rear frame panel 124.

Rear frame panel 124 extends upwardly from frame pan 90 and as bestshown in FIG. 9, includes a lower panel section 126 coupled to frame pan90, and in particular, is nestled between the channels 92. Rear framepanel 124 is comprised of channel portions 128 and plate portions 130,132 (FIGS. 6 and 9) extending between channel portions 128, the channelportions defining mounting surfaces having apertures 134 and locatingapertures 136, as further described herein.

As shown best in FIGS. 7 and 10, front engine mounts 140 are provided onframe 10. Front engine mounts 140 include top plate portion 142 attachedto cross frame portion 88, and to an inside surface of frame tube 50.Front engine mounts 140 further include an upper mounting plate 144having mounting apertures 146 and locating apertures 148, as furtherdescribed herein.

As shown best in FIG. 9, the frame 10 further includes support uprights150 for roll cage structure 4, with lower tube portions 152 coupled toframe tubes 50, 52; transition tube portions 154 extending upwardly,rearwardly and outwardly, and further includes upper tube portions 156.Attachment inserts 158 are coupled to the upper tube portions 156, asdescribed further herein. Frame portions 160 (FIG. 8) extend fromsupport uprights 150 and extend transverse to a longitudinal directionof the vehicle and include mounting inserts 162. A removable framesection 164 (see FIG. 2) is removably provided for ease of installingthe engine and transmission subassembly as more fully described herein.

As shown in FIG. 5, the frame 10 further comprises frame tube portions170, extending upwardly and rearwardly from frame tubes 50, 52 andintersecting with frame portions 160. Frame tube portions 180 extendupwardly from the rear frame panel 124 and extend forwardly to intersectwith the support uprights 150. Brackets 182 extend between frameportions 160, frame tube portions 170 and frame tube portions 180, asbest shown in FIG. 7. Shock mounting brackets 184 (FIGS. 6 and 7) arecoupled to frame tubes 186, which in turn are coupled to frame tubeportions 180. Frame 10 also includes a seat frame 190 (FIG. 7) havingframe portions 192, 194 and 196 as further described herein.

With reference now to FIGS. 5 and 6, front suspension mount portion 58will be described in greater detail. As shown, frame 10 includes frontframe portion 200, in the form of a channel, extending transverselyacross a front portion of the frame tubes 50, 52. The front frameportion 200 extends transversely beyond the frame tubes to define firstmounting extensions 202. As shown best in FIG. 6, frame 10 furthercomprises mounting plate 210 coupled between front tube portions 84, anddefines a mounting plate 212 and second mounting extensions 214. Firstand second mounting extensions 202, 214 are provided for mounting alower suspension arm as further disclosed herein.

With reference still to FIGS. 5-8 and 11, frame 10 further includesU-shaped frame tubes 220 having portions 222 butted into front frameportion 200, upwardly extending portions 224 and portions 226 extendinglongitudinally and rearwardly. Meanwhile frame tubes 230 (FIG. 6) extendfrom frame tubes 50, 52 at portions 232 and then upwardly at portions234 and intersect with frame portions 226. A shock tower 240 extendstransversely across the frame portions 226, and has shock mounts at 242.A frame tube 246 extends transversely across frame portions 234 andprovides support for steering post mount portion 74. Frame tube 246 alsoincludes mounting portions 248 adjacent to the tube ends for mounting ofthe roll cage structure 4, as described in greater detail herein.

Finally, as shown in FIGS. 5 and 12, steering mechanism mount portion 72is shown including a plate portion 250 having a plurality of platesections 252, 254, 256 and 258 extending from the marginal edges ofplate portion 250. Plate section 252 extends forwardly and has circularcutout portions 260 profiled to partially surround frame portions 224and threaded apertures 267. Plate sections 254 and 256 further includeplate flaps 262 and 264 which fit within tube portions 224, and includethreaded apertures 266. Plate section 258 extends rearwardly for contactwith front frame portion 200. Plate portion 250 defines a mountingsurface (the back side of plate portion 250 as viewed in FIG. 12) withmounting apertures 270 for mounting a steering mechanism thereto asdescribed further herein. Plate sections 254 and 256 include mountingapertures 272 for mounting a winch thereto as further described herein.

It should be generally understood that the frame 10 as described aboveis a structurally rigid member. The frame is described as having aplurality of tubes and channels, and it should be understood that theseitems are structurally rigid, for example steel or aluminum tubes. Manyplates are also referred to and these could be stamped and formed itemsof steel or aluminum construction, but they could also be one piece castitems, or composite materials. In the case of the steel construction,the various items are fixed together for example by welding, but theitems could also be held together by fasteners, and some items could beheld together by industrial adhesives, for example as shown anddescribed in Applicants U.S. patent application Ser. No. 13/027,116filed Feb. 14, 2011, the subject matter of which is incorporated hereinby reference.

With reference now to FIG. 13, front suspension 42 will be described ingreater detail. As shown, front suspension 42 is comprised of lowercontrol arms 280 (also known as A-arms) having an inner end at 282 andan outer end at 284. As shown, inner end 282 is coupled between firstand second mounting extensions 202, 214. Outer end 284 of control arm280 is defined as a ball joint and is coupled to a lower end of strut290. As shown, strut 290 includes an upper shock absorber portion 292and a lower steering portion 294. Steering portion 294 is comprised of ahub carrier 296 having a hub 298 rotatably coupled thereto. Strutsteering portion 294 also includes a steering coupler at 300 asdescribed herein. Shock absorber portion 292 of strut 290 is coupled toportion 242 of shock tower 240. Thus it should be understood that lowercontrol arm (and wheel 12 attached to it) is movable upwardly anddownwardly under the controlled resistance of an internal shock absorber302.

With reference now to FIGS. 14-17, the steering assembly will bedescribed in greater detail. With reference first to FIG. 14, thesteering assembly includes a steering mechanism 310 having a centerline1500 extending laterally outward from a fore-and-aft midpoint ofsteering mechanism 310, which in the disclosed embodiment is a rack andpinion type steering system having an input shaft 312 (FIG. 17) with anoutput to steering arms 314 (FIG. 14). Input to steering shaft 312 is byway of steering wheel 30 (FIG. 15) to a steering shaft 320 coupled tosteering post 322. It should be understood that the connection ofsteering shaft 320 to steering post 322 and connection of steering post322 to steering mechanism 310 is by way of universal joints, for exampleuniversal joint 324 shown in FIG. 15.

As mentioned above, steering wheel 30 and steering shaft 320 arepivotally connected to steering post mount portion 74, the pivotingangle being adjustable through adjustment mechanism 32. With referenceagain to FIG. 13, it should be appreciated that steering arms 314 arecoupled to steering couplers 300 on strut 290, the steering arms 314,therefore rotating the steering portions 294 of struts 290 for steeringpurposes. As shown best in FIGS. 13 and 17, steering mechanism 310 isfixed to the rear surface of plate 250 fixedly coupling steeringmechanism 310 to the frame 10. In particular, steering mechanism 310 isattached by way of fasteners through apertures 270 (FIG. 12).

With reference now to FIG. 13-15, ATV 2 includes a front final drive,illustratively a front differential 330, which includes constantvelocity couplings 332 as output from differential 330 and furtherincludes constant velocity couplings 336 (FIG. 13) as input to steeringportions 294, thereby driving hubs 298. As shown best in FIG. 13, frontdifferential 330 is mounted to a top of plate 212 by way of a pluralityof fasteners 340. As shown in FIGS. 14 and 15, steering mechanism 310and front differential 330 are positioned in a somewhat tandemrelationship and as best shown in FIG. 14, the centerline ofdifferential 330 (shown at 342 in FIG. 14) is positioned rearward of acenterline through constant velocity couplings 336 (shown at 342 in FIG.14), therefore stub shafts 338 angle forward to the constant velocitycouplings 336. Differential 330 also includes an input shaft at 350 anda universal joint at 352.

With reference now to FIGS. 18-20, rear suspension 42 will be describedin greater detail. As shown, rear suspension 42 is comprised of lowercontrol arm 360 and upper control arm 362 coupled to brackets 100, 102.Lower control arm 360 has inner couplings at 364 and upper control arm362 has couplings at 366. These couplings are positioned within channels100, 102 and pivotally attached by way of fasteners 368 as best shown inFIG. 19. Lower control arm 360 includes a bracket 370 for mounting ashock absorber 372 with the shock rod 374 (FIG. 19) coupled to bracket184 (FIG. 18). As shown best in FIG. 19, rear suspension 42 furthercomprises spindles 380 coupled to coupling 382 of lower control arm 360and upper coupling 384 of upper control arm 362. A hub 390 is rotatablycoupled to spindle 380 and includes a brake disk 392.

With reference now to FIGS. 20-22, power train 20 is shown in greaterdetail. Power train 20 includes engine 60 and transmission 62 coupled toeach other as shown in either of U.S. patent application Ser. Nos.12/849,480 or 12/849,516, both of which were filed on Aug. 3, 2010, thesubject matter of which is incorporated herein by reference. Engine 60couples to transmission by way of a continuously variable transmission(CVT) 400 and engine 60 and transmission 62 are mechanically connectedto each other by way of links 402 (FIG. 23). CVT 400 includes an innerhousing 410 and an outer housing 412 which houses a drive and drivenclutch as is known in the art. Inner cover 410 includes cooling airinlet duct at 414 which may be connected to an intake duct as describedin either of U.S. patent application Ser. Nos. 12/849,480 or 12/849,516,both of which were filed on Aug. 3, 2010, the subject matter of which isincorporated herein by reference.

As shown, transmission 62 includes an output 420 (FIG. 22) facingforwardly and positioned under CVT 400, which drives front differential330 through drive shaft 426. As shown in FIG. 23, transmission 62 isintegrated with rear differential 430 having splined output drivecouplings 432. Thus as shown, engine 60 and transmission 62 are bothdrivingly coupled to each other through CVT 400 as well as rigidlyconnected together by way of links 402. The engine and transmission cantherefore be mounted as a subassembly and mounted within frame 10 of ATV2. Engine and transmission subassembly are mounted via a three pointmounting system through front engine mount 440 and rear engine mount442, as described below.

Front engine mount 440 is shown best in FIG. 21 having a cross beam 446attached to bracket 448 having mounting apertures at 450. Engine mount440 is shown somewhat exploded away from engine 60 in FIG. 21, and itshould be appreciated that front engine mount 440 is attached to theblock of engine 60 by removing fasteners 460 (FIG. 23) and insertingfasteners 460 through mounting apertures 450. Front engine mount 440further includes mount arms 462 which includes resilient engine mounts464. With reference to FIG. 23, rear mount 442 includes a bracket 470fixed to the transmission 62 which retains a resilient engine mount 472which is substantially the same as those shown at 464 (FIG. 21). Each ofthe mounts 464, 472 includes locating pegs 478 and fasteners 480 forcoupling the engine mounts to the frame.

With reference again to FIGS. 18 and 19, engine and transmissionsubassembly is shown supported by the frame with engine mounts 464attached to front engine mounts 140. In this configuration, locatingpegs 478 of mounts 464 are located in locating apertures 148 (FIG. 10)while fasteners 480 are positioned through apertures 146. Meanwhile,locating pegs 478 of mount 442 are located in locating apertures 146(FIG. 9) while fasteners 480 are positioned through apertures 134 (FIG.9).

With reference now to FIGS. 24-26, the operator's compartment 6 will bedescribed in greater detail. As shown, ATV 2 includes a front enclosuremember 500 which includes a back wall 502, side walls 504 and 506, aninclined floor portion 508 and floor board portion 510. A recess portion512 is provided for the operator's foot, such that the operator's heelcan be positioned in the recess 512 and operate the accelerator pedal520 of the operator controls 34. The recess 512 could be similarlydesigned to that shown in U.S. patent application Ser. No. 12/218,572filed Jul. 16, 2008, the subject matter of which is incorporated hereinby reference.

Front enclosure 500 further includes a center section 521 including afirst convex section 522, a protruding section 524 and a recessedportion 526. Front enclosure 500 further includes lateral sections 530(FIG. 25) which extend outwardly from the operator's area and overlapframe tubes 230. As shown best in FIG. 26, the front enclosure 500further includes a wall portion 534 extending upwardly from floor boardportion 510 extending substantially up to seat 22. With reference stillto FIG. 26, ATV 2 is shown in section which shows concave portion 522extending over and providing clearance for differential 330; protrusion524 providing clearance for universal joint 324; and recessed portion526 providing clearance for steering rod 322.

It should also be appreciated that the operator's compartment,particularly the feet room defined between side walls 504 and 506 isextremely voluminous, even with the reduced wheel base of ATV 2. This isaccomplished by providing the front steering mechanism 310 and frontdifferential 330 in tandem relation relative to each other and byproviding the front suspension as a strut mechanism as opposed to adouble control arm mechanism. Said differently, if an upper control armhad been used in addition to the front lower control arm 280, then aninner coupling position of an upper control arm would have reduced theallowable space for front enclosure 500. For example and with referenceagain to FIG. 14, if an upper control arm had been used, it would havebeen mounted generally vertically above lower control arms and wouldhave been mounted above front differential 330. Rather, the use of asingle lower control arm 280 and the use of struts allow side walls 504and 506 to be at least as wide as front frame tubes 230.

With reference now to FIGS. 27-29, frame 10 is provided with a couplingassembly to couple roll cage 4. As shown in FIG. 27, couplers 158 arefixed within an open end of frame tube portion 156 and are provided in asemi-cylindrical configuration. As shown in FIGS. 28 and 29, front frametube 246 includes cut out portions 248 at each end which provides accessto mounting apertures 550 (FIG. 29). More specifically, front frame tube246 includes a front tube wall and a rear tube wall, and a portion ofthe front tube wall adjacent each end is cut away to expose the reartube wall. Couplers 552 are provided having a semi-cylindrical portionhaving a flat face 554 which can abut back surface 558 of frame tube246, and then fasteners are received through apertures 550 retainingcouplers 552 thereto. As described, four couplers, that is couplers 158and 552 are provided such that roll cage 4 can be assembled anddisassembled from ATV 2, as further described herein. With referenceagain to FIG. 4, as described above roll cage 4 defines an enlargedenclosure for an operator. As shown in FIG. 4, due to the outwardconfiguration of frame tubes 150, the enclosure extends beyond lines 560which project from inner surfaces of the front tires. More particularly,a width shown at 562 of the roll cage 4 is 36.028 inches in width(915.115 mm).

With reference now to FIGS. 30-32, radiator 570 is shown supported byradiator bracket 572. Radiator bracket 572 is attached to front bracket72 by way of fasteners through apertures 576 of tabs 574 into threadedapertures 266 (FIG. 12). Radiator bracket 572 also includes upper tabs580 having apertures 582 therethrough. Tabs 580 overlap top wall 252 ofbracket 72 and a fastener may be positioned through apertures 582 intothreaded apertures 267. This provides an upper platform surface 578 forsupporting radiator 570.

As also shown in FIG. 32, winch 600 is provided having a mountingbracket 602 having apertures 604 with threaded members 606 attachedthereto. Bracket 602 may be positioned within side walls 254, 256 withapertures 604 aligned with apertures 272 where upon a fastener may bepositioned through apertures 272 to engage thread members 606.

With reference now to FIGS. 33 and 34, roll cage 4 is shown in greaterdetail. As shown, roll cage 4 includes left frame member 610 and rightframe member 612, the frame members 610 and 612 being fastened togetherby way of cross braces 614, 616 and 618. In the embodiment shown, crossbraces 614, 616 and 618 are structural members formed of a rigidmaterial and as shown are stamped and formed steel members. Brackets622, 624 and 626 (FIG. 34) are coupled to the frame members 610 and 612,and cross brace 614 is attached to the brackets 622; cross brace 616 isattached to the brackets 624; and cross brace 618 is attached to thebrackets 626. In addition, front couplers 630 are provided, whichcorrespond with couplers 552 (see FIG. 29), and the couplers 552, 630are attached to each other by way of fasteners. Rear couplers 632 arealso provided, which correspond with couplers 158 (see FIG. 5), and thecouplers 158, 632 are attached to each other by way of fasteners. In theembodiment shown, brackets 622, 624 and 626 are structural membersformed of steel or of a casting and are welded to the left and rightframe members 610 and 612. Cross braces 614, 616 and 618 may then beattached to the brackets by way of fasteners. As should be appreciated,the entire roll rage 4 can be added or removed by way of the fastenersthrough the couplers 630, 632.

With reference now to FIGS. 35-46, a second embodiment will be shown.With reference first to FIGS. 35-36, the general nature of the vehiclewill be described. As shown, vehicle 702 is an ATV class vehicle for asingle rider having dimensions similar to those of the Polaris SportsmanXP vehicle. However as vehicle 702 includes a roll cage structure 704,the vehicle includes a walk through opening at 706 entering intooperator's compartment 708, as best shown in FIG. 36. With thatbackground, the vehicle will be described in greater detail.

As shown in FIG. 36, vehicle 702 includes a frame 710, supported byfront wheels 712 and rear wheels 714. Frame 710 generally supports apowertrain 720 as well as a single seat 722 shown in the form of abucket seat. The bucket seat 722 may take the form of the seat in thevehicle known as the Polaris RZR, which is also shown in U.S. Pat. No.7,819,220 (EP Patent 2046625 B1), the subject matter of which isincorporated herein by reference.

As shown in FIG. 36, the vehicle may be steered by a steering wheel 730which is adjustable by adjustable mechanism 732. Alternatively, vehicle702 may be steered by a handlebar as is known by the Polaris SportsmanXP referred to above. In terms of vehicle speed controls, vehicle 702may have an accelerator pedal and a brake pedal similar to that of thePolaris RZR vehicle, or the vehicle may have vehicle speed controls byway of a thumb throttle and hand brakes on the handlebar as known by thePolaris Sportsman XP. The vehicle 702 includes a front suspension 734and a rear suspension 736, as best shown in FIG. 38.

In either event, and with reference to FIG. 37, operator's area 708includes a front enclosure 740 defined by back wall 742 and shroudedsidewalls 744 and 746. This allows the operator's feet to be fullyforward and nested in front enclosure 740 preventing the operator's feetand legs from moving from side to side. As also shown in FIG. 37,floorboard 748 is substantially flat allowing the ingress and egress ofthe operator. As shown, shrouded portion 744 can include an integratedcup holder such as 750 providing an ergonomic position for a cup holderor water bottle for the driver. As also shown in FIGS. 38 and 39, entrytreads 754 flank the operator walk through entry. While these are shownas flush with the floorboard 748, it should be appreciated that theycould also be provided with a lip, to further define an enclosure. Sidenets may also be provided to cover the opening across the operator'sentry way, as shown and described in assignee's pending U.S. applicationSer. No. 12/796,495 (and corresponding PCT application PCT/US2010/38709)the subject matter of which is incorporated herein by reference.

With reference again to FIGS. 36 and 37, single seat 722 is shown havinga seat bottom 760 for supporting the driver. As shown, seat bottom 760is flanked by side panels 766 and 768. Side panel 766 could have aninner cavity accessed by a pivotal door which opens allowing theoperator to have storage area inside the side panel 766. Side panel 768is partially occupied by a filler tube (not shown) which is connected toa gas tank situated under the driver's seat bottom 760 and which isclosed by the filler cap 772 (FIG. 37). Side panel 768 would alsoinclude a top panel 774. As shown, both the side panels 766 and 768 areapproximately the same level as seat bottom 760 which allows theoperator to use the top of the side panels for sliding in or out of theseat 722 upon ingress or egress. That in combination with the walkthrough entry, allows easy ingress/egress of the driver, even with theroll cage.

With reference now to FIGS. 38-42, frame 710 will be described ingreater detail. As shown best in FIG. 38, frame 710 is comprised of boxtube frames 780 and 782, which define the main structure for vehicle702. Frame 710 includes a rear engine and transmission mount portion784, a rear suspension mount portion 786 and front suspension mountportion shown generally at 788. As shown, frame 710 mounts an engine 790and transmission 792 to mount portion 784. Engine 790 is of the typeshown and described in Assignee's Ser. No. 61/385,802 filed Sep. 23,2010, and corresponding PCT application PCT/US2011/52914; the subjectmatter of which are incorporated herein by reference. Transmission 792,and the mounting of the engine and transmission together, as well as themounting of the engine 790 and transmission 792 to frame 710 is similarto that shown in either of U.S. patent application Ser. No. 12/849,480or 12/849,516, both of which were filed on Aug. 3, 2010, correspondingPCT application PCT/US2011/46395; the subject matter of which areincorporated herein by reference.

As shown in FIGS. 38, 39 and 46, front frame portion 788 is shown withframe tubes 780 and 782 that neck down and support cross beam 800, whichis coupled with frame uprights 801 and 802. Strut frame (or shock tower)806 and frame tubes 808 are also supported by frame tubes 780 and 782.Front frame portion 788 allows mounting of struts 810, suspension arms812, a front final drive, illustratively front differential 814, rackand pinion steering mechanism 816 as well as steering arms 818. Asteering post (not shown) extends upwardly from steering mechanism 816for steering the ATV 702. Half shafts or stub shafts 822 connect frontdifferential 814 to the wheels by way of couplings 828. As shown in FIG.46, a centerline through couplings 828 is forward of a centerlinethrough wheels 712, 714 and therefore stub shafts 822 extend rearwardlyand downwardly to the wheels 712, 714. Struts 810 are comprised of shockabsorber portion 824 and hub portion 826, where hub portions 826 rotaterelative to shock absorber portions 824.

With reference now to FIG. 40, the rear mount section 786 includes aframe tube 830 to which brackets of engine 790 are mounted as more fullydescribed in our U.S. application Ser. Nos. 12/849,480 and 12/849,516 asdescribed above. Transmission 792 is also mounted to frame portion 784(FIG. 38) by way of an isolation mount, again as described in Ser. Nos.12/849,480 and 12/849,516. As shown in FIG. 40, rear frame portion 784further includes a rear bracket structure 840 for mounting muffler 842which is connected to engine by way of exhaust pipe 844. As shown,muffler 842 is positioned in the rear of the vehicle as shown in FIGS.38 and 40. As mounted, engine and transmission, 790, 792, provide anengine output shaft 850, a transmission input shaft 852 to which acontinuously variable transmission (CVT, not shown) would be coupled.This provides a forward output shaft 854 for driving front differentialand front wheels, and a rear output shaft (not shown) for driving rearwheels. With reference to FIG. 38, suspension frame mount 786 provideschannels 858 for receiving double A-arms 860, 862 to which wheel hubs864 are mounted.

With reference now to FIGS. 41 and 42, upper support pedestals 880 areprovided which are supported above frame rails 780 and 782 by bracingsuch as 882, 884 and 886, and include connector members 890 attachedthereto for attachment to roll cage 704.

With reference now to FIG. 43, support bracket 900 is held by upright802 to support a connector 902 for attachment to the front of roll cage704. Note that bracket 900 supports roll cage 704 forward of strut 810as described herein.

With reference now to FIG. 44, a front frame casting 910 is providedwhich may be attached to front frame 788 and in particular to uprights802 and cross-frame 806. Frame casting 910 provides support for frontshroud 920 and front rack 922, as shown in FIGS. 35 and 36.

With reference again to FIGS. 35-37, vehicle 702 also includes a rearutility box 950 supported on a rear of vehicle 702 where a rear portion704 a of roll cage 704 extends downwardly through cargo box 950 (throughaperture 960, see FIG. 45) and portion 704 b extends downwardly throughan aperture 962 of front utility rack 922, see FIGS. 36 and 43. As shownin FIGS. 38 and 40, rear suspension includes a double A-arm suspensionhaving arms 970 and shock 972.

With reference now to FIGS. 47-52, a further illustrative frontsuspension 1040 for use with the vehicle 2 is shown. In the followingdescription, like reference numbers are used to identify similarcomponents to those detailed above in connection with front suspension40. As shown, front suspension 1040 is comprised of lower control arms1044 (also known as A-arms) having an inner end at 1046 and an outer endat 1048. Each lower control arm 1044 includes a first member 1050 and asecond member 1052 extending between lower inner coupling 1054 and lowerouter coupling 1056. Inner coupling 1054 may be pivotably secured to theframe 10, for example, between first and second mounting extensions 202and 214. Outer coupling 1056 may be defined as a ball joint secured tothe hub carrier 296 and hub 298 which, in turn is coupled to wheel 712.

The front suspension 1040 further includes upper control arms 1064 (alsoknown as A-arms) having an inner end at 1066 and an outer end at 1068.Each upper control arm 1064 includes a first member 1070 and a secondmember 1072 extending between upper inner coupling 1074 and upper outercoupling 1076. Inner coupling 1074 may be pivotably secured to the frame10, for example, between first and second mounting extensions 202 and214. Alternatively, brackets 1078 may be fixed, illustratively throughwelding, to the frame 10 and rotatably support the inner coupling 1074.Outer coupling 1076 may be defined as a ball joint secured to the hubcarrier 296 and hub 298 which, in turn is coupled to wheel 712.

Shock absorbers 1080 illustratively extend between the upper controlarms 1064 and the shock tower 240. More particularly, each shockabsorber 1080 includes an upper portion 1082 illustratively having anupper mount, such as a clevis 1084 and pin 1085 coupled to the shockmount 242, and a lower portion 1086 having a lower mount, such as aclevis 1087 and pin 1089 mounted to an upper cross-member 1088 of theupper control arm 1064. The upper cross-member 1088 and clevis 1087 areillustratively supported intermediate the inner and outer couplings 1074and 1076.

In the illustrative embodiment, the inner coupling 1074 of each uppercontrol arm 1064 is positioned vertically above, laterally outwardlyfrom, and longitudinally forward of the inner coupling 1074 of the lowercontrol arm 1044. The spacing of the upper control arms 1064 relative tothe lower control arms 1044 provides improved clearance for anoperator's legs within the operator's compartment 6.

With reference to FIG. 48, the lateral width spacing (W) between theinner couplings 1074 of the upper and lower control arms 1064 and 1044is illustratively about 2.74 inches (69.67 mm). The illustrativevertical height spacing (H) between the inner couplings 1074 of theupper and lower control arms 1064 and 1044 is about 5.88 inches (149.28mm). As shown in FIG. 50, the longitudinal length spacing (L) betweenthe midpoints 1090 and 1092 of the inner couplings 1074 and 1054 of theupper and lower control arms 1064 and 1044, respectively, is about 6.95inches (176.61 mm). The midpoints 1090 and 1092 of the inner couplings1074 and 1054 are defined as the center point between the respectivefirst and second members 1070, 1050 and 1072, 1052. The control arms1044 and 1064 are configured to provide approximately 9 inches (228.6mm) of travel.

With reference to FIG. 53, a further illustrative front suspension 1094is illustrated. The front suspension 1094 includes lower control arms1044 (also known as A-arms) having inner end at 1046 and outer end at1048. Inner coupling 1054 may be pivotably secured to the frame 10,while an outer coupling 1095 may be secured to the hub carrier 296 andhub 298. The outer coupling 1095 illustratively includes a verticalpivot tube 1096 secured (e.g. welded) to the outer end 1048 of controlarms 1044. A u-shaped receiver or wheel hub 1098 and pin 1100 supportsthe pivot tube 1096 for pivoting movement about a generally verticalaxis. It should be noted that the vertical pivot tube 1096 and theu-shaped receiver 1098 may be interchanged. In other words, the verticalpivot tube 1096 may be supported by the wheel hub 298, and the u-shapedreceiver 1098 may be supported by the control arm 1044.

Shock absorbers 1080 illustratively extend between the lower controlarms 1044 and the shock tower 240. More particularly, each shockabsorber 1080 includes an upper portion 1082 illustratively having anupper mount, such as a clevis 1084 and pin 1085 mounted to the shockmount 242, and a lower portion 1086 having a lower mount, such as aclevis 1087 and pin 1089 mounted to an upper cross-member 1102 of thelower control arm 1044. The upper cross-member 1102 and clevis 1087 areillustratively supported intermediate the inner and outer ends 1046 and1048 of the control arms 1044.

With reference now to FIGS. 54-59, an illustrative floorboard or floorbody panel 1110 coupled to the frame 10 is shown within the operator'scompartment 6. The floorboard 1110 illustratively includes a pluralityof portions having different vertical levels or elevations, including adepressed footwell 1112 laterally spaced from a raised dead pedal 1114.As shown, the footwell 1112 is defined by a recess 1113 for locating anoperator's right foot, and the dead pedal 1114 is defined by a raisedportion 1115 for locating an operator's left foot.

With reference now to FIGS. 54-57 and 59, footwell 1112 may includesimilar features as recess 512 detailed above. Footwell 1112 is providedfor the operator's right foot, such that the operator's heel can bepositioned in the recess 1113 and operate the accelerator pedal 520 or abrake pedal 1116. Footwell 1112 is comprised of a floor 1118, rear wall1120, front wall 1122, left side wall 1124, and right side wall 1126.Right side wall 1122 is angled relative to left side wall 1124, asdescribed herein. Floor 1118 is angled downwardly from front wall 1122to rear wall 1120 by angle α (illustratively about 9.5 degrees) (FIG.57), and laterally overlaps at least a portion of both foot pedals 220and 1116 (FIG. 54).

With reference to the illustrative embodiment of FIG. 56, the front wall1122 has a width W1 of about 6.09 inches (154.76 mm), and the rear wall1120 has a width W2 of about 6.86 inches (174.2 mm). In anotherillustrative embodiment, the front wall 1122 has a width W1 of about6.06 inches (153.9 mm), and the rear wall 1120 has a width W2 of about6.52 inches (165.55 mm). Illustratively, the footwell 1112 has depth ofapproximately 0.89 inches (22.7 mm) at the front wall 122, and a depthof approximately 0.93 inches (23.7 mm) at the rear wall 1120. In theillustrative embodiment of FIG. 56, the length L1 of the footwell 1112is approximately 8.94 inches (226.94 mm). In another illustrativeembodiment, the length L1 of the footwell 1112 is approximately 7.95inches (202.03 mm).

As shown in FIGS. 54-56, 58 and 60, dead pedal 1114 is provided for theoperator's left foot, such that the operator's heel may be positioned onthe floorboard 1110 with his or her foot angled upwardly. Moreparticularly, the dead pedal 1114 includes a heel pocket 1130 configuredto receive the heel of an operator's foot, an arch support 1132configured to support the arch of an operator's foot when his/her heelis in the heel pocket 1130, and an upper support 1133 configured tosupport the end portion of an operator's foot. The raised portion 1115is angled upwardly from a front wall toward a rear wall at anergonomically advantageous position, illustratively by an angle β (about42 degrees) to match the natural placement and angle of an operator'sfoot.

With FIG. 56, the dead pedal 1114 includes a left side edge 1134 and aright side edge 1136 defining a lateral dimension or width W3,illustratively 5.98 inches (151.84 mm). The arch support 1132illustratively has a length L2 of approximately 3.2 inches (81.38 mm).The lateral distance between right side edge 1136 and left side wall1124 at front wall 1122 of footwell 1112 is shown as D3 in FIG. 56 andis illustratively about 7.39 inches (187.68 mm). In another illustrativeembodiment, distance D3 between right side edge 1136 of dead pedal 1114and left side wall 1124 at front wall 1122 of footwell 1112 is about6.23 inches (158.29 mm).

A drive housing 1140 is illustratively positioned laterally intermediatethe footwell 1112 and the dead pedal 1114. The drive housing 1140includes a first or raised portion 1142 providing clearance fordifferential 330, and a second portion or recess 1144 providingclearance for universal joint 324. An opening 1146 is provided for theinput shaft 312 below steering post 322. The opening 1146 may comprise acircular aperture or a u-shaped slot to facilitate assembly.

While this invention has been described as having an exemplary design,the present invention may be further modified within the spirit andscope of this disclosure. This application is therefore intended tocover any variations, uses, or adaptations of the invention using itsgeneral principles. Further, this application is intended to cover suchdepartures from the present disclosure as come within known or customarypractices in the art to which this invention pertains.

The invention claimed is:
 1. An all-terrain vehicle comprising: a frame;a seat supported by the frame; front and rear wheels supporting theframe; a powertrain supported by the frame and drivingly coupled to thefront wheels through front axles and rear wheels through rear axles; asteering assembly operably coupled to the front wheels and including asteering mechanism intermediate the front wheels and a plurality ofsteering arms operably coupled to the front wheels; front lower controlarms, each having a first member and a second member, the first memberincluding a first inner end and a first outer end, and the second memberincluding a second inner end and a second outer end, the first andsecond inner ends being pivotably coupled to the frame at a lower innercoupling, and the first and second outer ends being coupled to one ofthe front wheels at a lower outer coupling; front upper control arms,each having a first member and a second member, the first memberincluding a first inner end and a first outer end, and the second memberincluding a second inner end and a second outer end, the first andsecond inner ends being angled toward each other and pivotably coupledto the frame at a connection consisting of a single upper innercoupling, and the first and second outer ends being coupled to one ofthe front wheels at an upper outer coupling; and front shock absorbers,each including a lower mount coupled to the upper control armintermediate the inner and outer ends, and an upper mount coupled to theframe; wherein the single upper inner coupling is positioned verticallyabove and longitudinally forward of the lower inner coupling, and ispositioned directly vertically above one of the steering arms andlongitudinally forward of one of the front axles.
 2. The all-terrainvehicle of claim 1, wherein the upper inner coupling is positioned about5.88 inches above the lower inner coupling.
 3. The all-terrain vehicleof claim 1, wherein the upper inner coupling is positioned about 6.95inches forward of the lower inner coupling.
 4. The all-terrain vehicleof claim 1, wherein the upper inner coupling is positioned laterallyoutwardly from the lower inner coupling.
 5. The all-terrain vehicle ofclaim 4, wherein the upper inner coupling is positioned about 2.74inches outward from the lower inner coupling.
 6. The all-terrain vehicleof claim 1, further comprising a steering mechanism positioned forwardof the axial centerline of the front wheels.
 7. The all-terrain vehicleof claim 1, further comprising an operator's compartment extendinggenerally between the seat and a front enclosure, the front enclosureextending forwardly to a position proximate an axial centerline of thefront wheels.
 8. The all-terrain vehicle of claim 7, wherein the frontenclosure extends to a position forward of the axial centerline of thefront wheels.
 9. The all-terrain vehicle of claim 7, wherein the frontenclosure includes a floorboard positioned forward of the seat.
 10. Theall-terrain vehicle of claim 9, wherein the seat is elevated relative tothe floorboard.
 11. The all-terrain vehicle of claim 9, the floorboardincludes a plurality of portions at different elevations.
 12. Theall-terrain vehicle of claim 11, wherein the floorboard includes adepressed footwell and a raised dead pedal laterally spaced from thefootwell.
 13. The all-terrain vehicle of claim 1, further comprising afloorboard supported by the frame; and a foot control adjacent the floorboard and configured to be depressed by a foot of an operator supportedby the seat; wherein the floorboard includes a footwell adjacent a rightside of the vehicle to receive a heel of the user's right foot and adead pedal adjacent a left side of the vehicle to support the user'sleft foot.
 14. The all-terrain vehicle of claim 13, wherein the footwellis defined by a recess in the floorboard.
 15. The all-terrain vehicle ofclaim 14, wherein the recess is defined by a generally flat bottomportion and at least one adjoining wall.
 16. The all-terrain vehicle ofclaim 15, wherein the recess is generally rectangular.
 17. Theall-terrain vehicle of claim 14, wherein the dead pedal is defined by araised portion of the floor board.
 18. The all-terrain vehicle of claim17, wherein the foot control includes a plurality of pivotable footpedals.
 19. The all-terrain vehicle of claim 18, wherein the recesslaterally overlaps at least a portion of the foot pedals.
 20. Theall-terrain vehicle of claim 18, wherein the foot pedals include anaccelerator pedal and a brake pedal.
 21. The all-terrain vehicle ofclaim 20, wherein the footwell extends to the right of the acceleratorpedal, and the dead pedal extends to the left of the brake pedal suchthat the brake pedal is intermediate the footwell and the dead pedal.22. The all-terrain vehicle of claim 15, wherein the bottom portion isangled from horizontal.
 23. The all-terrain vehicle of claim 13, whereinthe seat is elevated relative to the floorboard.
 24. An all-terrainvehicle comprising: a frame; a seat supported by the frame; front andrear wheels supporting the frame; a powertrain supported by the frameand drivingly coupled to the front wheels through front axles and rearwheels through rear axles, the powertrain including a front final driveoperably coupled to the front wheels, and the front final drive having acenterline extending laterally from the front final drive and toward thefront wheels; a steering assembly operably coupled to the front wheelsand including a steering mechanism generally intermediate the frontwheels and a plurality of steering arms operably coupled to the frontwheels; front lower control arms, each having an inner end and an outerend, the first and second inner end pivotably coupled to the frame at alower inner coupling, and the outer end coupled to one of the frontwheels at a lower outer coupling; front upper control arms, each havinga first member and a second member, the first member including a firstinner end and a first outer end, and the second member including asecond inner end and a second outer end, the first and second inner endsbeing angled toward each other and pivotably coupled to the frame at aconnection consisting of a single upper inner coupling, and the firstand second outer ends being coupled to one of the front wheels at anupper outer coupling; and front shock absorbers, each including a lowermount coupled to the upper control arm intermediate the inner and outerends, and an upper mount coupled to the frame; wherein the single upperinner coupling is positioned vertically above and longitudinally forwardof the lower inner coupling, and is positioned directly vertically aboveone of the steering arms and longitudinally forward of one of the frontaxles, and a portion of the lower inner coupling longitudinally overlapsthe centerline of the front final drive.
 25. The all-terrain vehicle ofclaim 24, wherein a position at which the lower mounts of the frontshock absorbers are coupled to the upper control arms is forward of thecenterline of the front final drive.
 26. The all-terrain vehicle ofclaim 25, wherein the centerline of the steering mechanism is forward ofthe centerline of the front final drive.
 27. The all-terrain vehicle ofclaim 26, wherein the position at which the lower mounts of the frontshock absorbers are coupled to the upper control arms longitudinallyoverlaps the upper inner couplings.
 28. The all-terrain vehicle of claim27, wherein a position at which the upper mounts of the front shockabsorbers are coupled to the frame is forward of the centerline of thefront final drive.
 29. An all-terrain vehicle comprising: a frame; aseat supported by the frame; front and rear wheels supporting the frame;a powertrain supported by the frame and drivingly coupled to the frontwheels through front axles and rear wheels through rear axles, thepowertrain including a front final drive operably coupled to the frontwheels, and the front final drive having a centerline extendinglaterally from the front final drive and generally toward the frontwheels; a steering assembly operably coupled to the front wheels andincluding a steering mechanism intermediate the front wheels, and aplurality of steering arms operably coupled to the front wheels; frontlower control arms, each having an inner end and an outer end, the firstand second inner end pivotably coupled to the frame at a lower innercoupling, and the outer end coupled to one of the front wheels at alower outer coupling; front upper control arms, each having a firstmember and a second member, the first member including a first inner endand a first outer end, and the second member including a second innerend and a second outer end, the first and second inner ends being angledtoward each other and pivotably coupled to the frame at a connectionconsisting of a single upper inner coupling, and the first and secondouter ends being coupled to one of the front wheels at an upper outercoupling; and front shock absorbers, each including a lower mountcoupled to the upper control arm intermediate the inner and outer ends,and an upper mount coupled to the frame; wherein the centerline of thefront final drive is rearward of the steering mechanism, and the singleupper inner coupling is positioned forward of one of the front axles anddirectly vertically above one of the steering arms.
 30. The all-terrainvehicle of claim 29, wherein a position at which the lower mounts of thefront shock absorbers are coupled to the upper control arms is forwardof the centerline of the front final drive.
 31. The all-terrain vehicleof claim 30, wherein the centerline of the steering mechanism is forwardof the centerline of the front final drive.
 32. The all-terrain vehicleof claim 31, wherein the position at which the lower mounts of the frontshock absorbers are coupled to the upper control arms longitudinallyoverlaps the upper inner couplings.
 33. The all-terrain vehicle of claim32, wherein a position at which the upper mounts of the front shockabsorbers are coupled to the frame is forward of the centerline of thefront final drive.
 34. The all-terrain vehicle of claim 1, wherein eachof the upper control arms defines a diamond shape such that the firstand second inner ends of the first and second members of each frontupper control arm converge toward each other at the upper innercoupling, and the first and second outer ends of the first and secondmembers of each front upper control arm converge toward each other atthe upper outer coupling.